{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{2}{c}}
\toprule
                    &\multicolumn{2}{c}{Fraction of Contract Workers}\\\cmidrule(lr){2-3}
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}\\
                    &\multicolumn{1}{c}{Without F.E.}&\multicolumn{1}{c}{Ind. F.E.}\\
\midrule
Log Firm Size       &       0.123***&       0.119***\\
                    &     (0.027)   &     (0.027)   \\
Log Firm Size$^2$   &      -0.010***&      -0.009** \\
                    &     (0.004)   &     (0.004)   \\
\midrule
R2                  &        0.05   &        0.12   \\
N                   &        2170   &        2170   \\
\bottomrule
\end{tabular}
}
